US4259049A - Tabletting machine - Google Patents

Tabletting machine Download PDF

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Publication number
US4259049A
US4259049A US06/134,922 US13492280A US4259049A US 4259049 A US4259049 A US 4259049A US 13492280 A US13492280 A US 13492280A US 4259049 A US4259049 A US 4259049A
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US
United States
Prior art keywords
plungers
combination
chambers
cuffs
dust
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US06/134,922
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English (en)
Inventor
Rolf Willich
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fette GmbH
Original Assignee
Wilhelm Fette GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Wilhelm Fette GmbH filed Critical Wilhelm Fette GmbH
Application granted granted Critical
Publication of US4259049A publication Critical patent/US4259049A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
    • B30B15/02—Dies; Inserts therefor; Mounting thereof; Moulds
    • B30B15/026—Mounting of dies, platens or press rams
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B11/00—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses
    • B30B11/02—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses using a ram exerting pressure on the material in a moulding space
    • B30B11/08—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses using a ram exerting pressure on the material in a moulding space co-operating with moulds carried by a turntable
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
    • B30B15/0082—Dust eliminating means; Mould or press ram cleaning means

Definitions

  • the present invention relates to a tabletting machine, i.e., to a machine for compressing pulverulent and similar materials to form tablets (e.g., medication, candy or the like).
  • this measure is satisfactory in that it alleviates many of the dust-related problems.
  • one problem which even this measure does not adequately solve is the deposition of the fine dust on the shafts of the plungers (i.e., the elements which perform the compressing) which reciprocate in plunger guides. During this reciprocation the dust is then carried into the guides and into contact with their guide surfaces which tightly surround the plunger shafts. It is readily evident that the dust, once it reaches this position, will during succeeding reciprocations of the plungers act as an abrasive that wears away the cooperating surfaces of the plunger shafts and plunger guides. Over a period of time this wear becomes so pronounced that the plungers are no longer accurately guided.
  • the presence of the dust in the plunger guides severely reduces the ease of reciprocation, to such an extent that the plungers--urged by cams or other motion-imparting equipment to recriprocate but seized in the guides due to the presence of the dust--may become damaged.
  • a more particular object is to provide a tabletting machine in which the access of dust to the plunger guides is completely or at least substantially prevented.
  • one aspect of the invention resides in a combination which, briefly stated, may comprise tubular cuffs surrounding with annular clearance those portions of the plungers which move out of the guides during reciprocation; and means for blowing streams of gaseous fluid through the clearances along the respective plungers so as to prevent the deposition of dust on the portion of the plungers and the entry of the thus deposited dust into the respective guides.
  • the air which is admitted via the cuffs prevents the deposition of dust on the plunger portions which alternately emerge from and retreat into the plunger guides during reciprocation of the plungers.
  • the problems associated with the entry of such dust into the plunger guides are therefore avoided or at least greatly ameliorated.
  • FIGURE is a fragmentary vertical section through a tabletting machine embodying the invention.
  • the only partially illustrated machine has a plurality of compressing stations, only one of which is shown, which are all circumferentially spaced about a central upright shaft 8.
  • the shaft 8 may be stationary and the stations turn about the central axis 8' defined by the shaft 8. Since the compressing stations are all the same, illustration of one of them will suffice for an understanding of the invention.
  • FIGURE illustrates one compressing station having an upper plunger 1, a lower plunger 3 and a mold or matrix 2 with which the two plungers cooperate.
  • the plungers have respective leading endfaces 1a, 3a which enter into the cavity of the matrix 2 from opposite ends of the cavity, so as to compress pulverulent material therein between themselves and form the tablet 42.
  • the matrix 2 is mounted in a matrix table 4 which also mounts the (not illustrated) matrices of the other stations.
  • the plunger 1 is axially reciprocable in a plunger guide 5 and the plunger 3 is similarly axially reciprocable in a plunger guide 6.
  • the guides 5 and 6 also guide the upper and lower plungers (not illustrated) of the other stations.
  • the guides 5, 6, the plungers 1, 3 and the matrix table 4 with matrix 2 are all connected together (known per se) so as to jointly turn about the upright axis 8'.
  • the purpose of this invention is to avoid the deposition of dust on the plungers 1, 3 and its entry into the guides 5, 6.
  • the invention surrounds the forward parts of the plungers 1, 3 with respective cuffs 11, 13 of an elastomeric material, such as natural or synthetic rubber or synthetic plastic material.
  • These cuffs have respective beads or collars 14 which engage in appropriate recesses of the guides 5, 6 so that the cuffs are supported by these guides.
  • the inner cross-section of the tubular cuffs 11, 13 decreases in direction towards the face 1a, 3a of the respectively associated plunger; in this manner the annular air passage bounded by the cuffs and plungers also decreases so that air flowing towards the respective faces 1a, 3a is accelerated.
  • Air supply passages 10, 12 communicate with the upstream ends of the cuffs 11, 13 so that air admitted into the annular air passages of the cuffs 11, 13 flows therethrough, as indicated by the arrows.
  • the air is supplied via an upper air supply chamber 46 which is provided in a stationary upper part 30 serving as the cam carrier of the machine (the cams are not illustrated; they are known per se).
  • the air (derived from a suitable not-illustrated supply) enters into distribution chamber 48 of part-circular (in top view) outline; the distribution passages 10 branch off from this chamber 48 which is in part bounded by a stationary sheet-material housing.
  • housing 43 extends into oil seals (oil-filled grooves) 44, 45 to effect a seal with reference to the rotating components located beneath the housing 43.
  • a connecting passage 7 extends from the bottom region of chamber 48 into a lower air supply chamber 50 which is also of part-circular outline. The lower end of chamber 50 is closed off by a bottom wall. Air passages 12, 12', 12" etc. distribute air from chamber 50 to the respective lower plungers 3 (only one shown).
  • the chambers 48 and 50 could also be formed in the hollow shaft 8 and the passages 10, 12 would then extend about radially to the respective plungers 1, 3.
  • the generally segment-shaped (part-circular) chambers 48 (one shown) of which each supplies several of the plungers as illustrated, are currently preferred. These chambers could also service the lower plungers 3, in lieu of the provision of the lower chamber 50.
  • the exit openings at which the passages 10, 12 discharge air into the cuffs 11, 13 are centered on the longitudinal axes of the plungers 1, 3, respectively. However, such centering is not absolutely necessary and may be dispensed with if, for example, a circulating air flow or increased air turbulence is to be produced in the air gaps of the cuffs 11, 13.
  • the machine is provided with suction chambers 25 and 26 which surround the cuffs 11, 13 and the exposed parts of the plungers.
  • the chamber 25 is defined by the guide 5 and a stationary hood or cover 15, and the chamber 26 is defined by the guide 6 and a stationary hood or cover 16.
  • the suction chambers 25, 26 are not sealed. Instead, openings or gaps 20 are provided at the juncture of the edges of covers 15, 16 with the guides 5, 6.
  • the suction produced in the chambers 25, 26 via the suction channels 60, 61 causes not only the dust and the air from cuffs 11, 13 to be withdrawn through the channels 60, 61, but also causes ambient air to be aspirated through the gaps 20 (see arrows 21, 22) so that an escape of dust is prevented without special seals even with the covers 15, 16 being stationary relative to the other, rotating components.
  • An air-inlet passage 32 communicates with the chamber 25 at the bottom thereof (it need, however, not be located at the bottom). Its purpose is to prevent the deposition of dust on or in the region of the face 1a of plunger 1 and on the upper surface of the matrix table 4.
  • air can, of course, refer to air in all its forms, i.e., including air which has been pretreated to remove moisture and make it dry, as well as to any suitable gases.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Medical Preparation Storing Or Oral Administration Devices (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Press Drives And Press Lines (AREA)
US06/134,922 1979-04-07 1980-03-28 Tabletting machine Expired - Lifetime US4259049A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2914201 1979-04-07
DE2914201A DE2914201C2 (de) 1979-04-07 1979-04-07 Tablettiermaschine

Publications (1)

Publication Number Publication Date
US4259049A true US4259049A (en) 1981-03-31

Family

ID=6067806

Family Applications (1)

Application Number Title Priority Date Filing Date
US06/134,922 Expired - Lifetime US4259049A (en) 1979-04-07 1980-03-28 Tabletting machine

Country Status (9)

Country Link
US (1) US4259049A (enrdf_load_stackoverflow)
JP (1) JPS5918160B2 (enrdf_load_stackoverflow)
AT (1) AT378348B (enrdf_load_stackoverflow)
BE (1) BE882654A (enrdf_load_stackoverflow)
CH (1) CH646097A5 (enrdf_load_stackoverflow)
DE (1) DE2914201C2 (enrdf_load_stackoverflow)
FR (1) FR2453016A1 (enrdf_load_stackoverflow)
GB (1) GB2046169B (enrdf_load_stackoverflow)
IT (1) IT1127002B (enrdf_load_stackoverflow)

Cited By (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4403935A (en) * 1980-03-27 1983-09-13 Manesty Machines Limited Tabletting machines
US4569650A (en) * 1984-02-07 1986-02-11 Kilian & Co., Gmbh Tablet press
US4793791A (en) * 1986-04-08 1988-12-27 Hata Iron Works, Ltd. Rotary powder compression molding apparatus
US5462427A (en) * 1993-05-05 1995-10-31 Kilian & Co. Gmbh Rotary tablet press
US20030031744A1 (en) * 2001-08-09 2003-02-13 Cecil William Alvin Rotary tablet press
WO2003020499A1 (en) * 2001-09-05 2003-03-13 Courtoy Nv A rotary tablet press and a method of cleaning such a press
WO2003084738A1 (de) * 2002-04-09 2003-10-16 Kilian Gmbh & Co. Kg Rundlauf-tablettenpresse mit stempeldichtungselement und stempeldichtungselement
US20040067275A1 (en) * 2001-03-16 2004-04-08 Roberto Trebbi Tablet press machine
RU2266822C2 (ru) * 2001-09-05 2005-12-27 Кауртой Нв Ротационный таблеточный пресс и способ промывки такого пресса
US20060157878A1 (en) * 2003-07-07 2006-07-20 Ethypharm Installation comprising a machine for the production of tablets which are intented, in particular, for therapeutic use
US20080029915A1 (en) * 2006-08-02 2008-02-07 Courtoy Nv Rotary tablet press
EP2036709A2 (de) 2007-09-13 2009-03-18 Fette GmbH Rundlauf-Tablettenpresse
US20100059292A1 (en) * 2008-09-09 2010-03-11 Fette Gmbh Method for testing multilayer tablets in a multiple rotary press
US20100136180A1 (en) * 2007-02-01 2010-06-03 Nestec S.A. Method and apparatus for making centre-filled shaped food products
US20110014352A1 (en) * 2007-02-15 2011-01-20 Pascal Grenier Method and apparatus for producing a centred compression coated tablet
EP2082867A3 (de) * 2008-01-25 2011-04-20 Fette GmbH Tablettenpresse
CN101443182B (zh) * 2006-05-11 2012-03-28 Ima基利安有限两合公司 带有清洗装置的旋转式压片机及用于该压片机的转子
USRE45590E1 (en) * 2001-12-01 2015-06-30 Fette Compacting Gmbh Ring segment for a tablet press
US20150216805A1 (en) * 2014-02-04 2015-08-06 Kikusui Seisakusho, Ltd. Single stroke compression molding machine and method of producing compression molded product
CN105128388A (zh) * 2015-09-22 2015-12-09 太仓益鑫机床有限公司 旋转式压机
US11472071B2 (en) * 2019-09-13 2022-10-18 Kikusui Seisakusho Ltd. Rotary compression-molding machine
US11577434B2 (en) * 2019-09-13 2023-02-14 Kikusui Seisakusho Ltd. Rotary compression-molding machine

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3049597C2 (de) * 1980-12-31 1982-10-28 Kilian & Co GmbH, 5000 Köln Tablettenpresse
JPH074655A (ja) * 1992-06-30 1995-01-10 Takeuchi Akira 電池ライター
JP5252801B2 (ja) * 2006-12-22 2013-07-31 塩野義製薬株式会社 ノズル機構
DE102008009364B4 (de) * 2008-02-14 2014-08-07 Bosch Packaging Technology Ltd. Tablettenpressmaschine mit neuartiger Rotoreinheit
JP6602153B2 (ja) * 2015-10-21 2019-11-06 エスエス製薬株式会社 粉体圧縮成型装置
DE102023135488A1 (de) * 2023-12-18 2025-06-18 Fette Compacting Gmbh Vorrichtung und Verfahren zum Entstauben von Tabletten oder Kapseln

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1918064A (en) * 1930-09-08 1933-07-11 Gen Electric Method of making strong, thin, cemented carbide disks
US2169281A (en) * 1937-11-05 1939-08-15 Pfanstiehl Chemical Company Apparatus for forming shaped small objects
US3128499A (en) * 1961-06-15 1964-04-14 Western Electric Co Molding apparatus
US3156011A (en) * 1962-01-10 1964-11-10 Donald M Olson Self-contained variable-environment pressing die
US3599578A (en) * 1968-11-18 1971-08-17 Fumio Sato Apparatus for producing press-molded articles
US3784343A (en) * 1970-06-12 1974-01-08 Mitsuishi Fukai Iron Works Brick press with means for withdrawing air from brick raw material
US3804570A (en) * 1971-11-19 1974-04-16 Werner & Pfleiderer Block press
US3832107A (en) * 1973-06-29 1974-08-27 United Aircraft Corp Apparatus for making articles from particulate matter
DE2424655A1 (de) * 1974-05-21 1975-12-04 Kilian & Co Gmbh Rundlauftablettenpresse
US3999922A (en) * 1975-04-16 1976-12-28 Yasuo Shimada Rotary tableting machine

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE437808C (de) * 1924-02-29 1926-11-29 Stanislaus Szymanski Abdichtungsvorrichtung fuer den die Kurbelwelle mit Lagern und den Schubstangenkopf einschliessenden Schutzkasten an Brikettpressen
US3029752A (en) * 1959-07-20 1962-04-17 Stokes F J Corp Tablet making machine
GB865885A (en) * 1959-07-20 1961-04-19 Stokes F J Corp Tablet making machine
FR1496867A (fr) * 1966-10-17 1967-10-06 Korsch Spezialfab Emil Presse à table circulaire rotative pour la fabrication de comprimés
US3533360A (en) * 1968-01-05 1970-10-13 Walter R Kibbe Upper punch socket seal for rotary tableting presses
JPS5110145Y2 (enrdf_load_stackoverflow) * 1971-04-13 1976-03-17

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1918064A (en) * 1930-09-08 1933-07-11 Gen Electric Method of making strong, thin, cemented carbide disks
US2169281A (en) * 1937-11-05 1939-08-15 Pfanstiehl Chemical Company Apparatus for forming shaped small objects
US3128499A (en) * 1961-06-15 1964-04-14 Western Electric Co Molding apparatus
US3156011A (en) * 1962-01-10 1964-11-10 Donald M Olson Self-contained variable-environment pressing die
US3599578A (en) * 1968-11-18 1971-08-17 Fumio Sato Apparatus for producing press-molded articles
US3784343A (en) * 1970-06-12 1974-01-08 Mitsuishi Fukai Iron Works Brick press with means for withdrawing air from brick raw material
US3804570A (en) * 1971-11-19 1974-04-16 Werner & Pfleiderer Block press
US3832107A (en) * 1973-06-29 1974-08-27 United Aircraft Corp Apparatus for making articles from particulate matter
DE2424655A1 (de) * 1974-05-21 1975-12-04 Kilian & Co Gmbh Rundlauftablettenpresse
US3999922A (en) * 1975-04-16 1976-12-28 Yasuo Shimada Rotary tableting machine

Cited By (37)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4475880A (en) * 1980-03-27 1984-10-09 Manesty Machines Limited Tabletting machines
US4403935A (en) * 1980-03-27 1983-09-13 Manesty Machines Limited Tabletting machines
US4569650A (en) * 1984-02-07 1986-02-11 Kilian & Co., Gmbh Tablet press
US4793791A (en) * 1986-04-08 1988-12-27 Hata Iron Works, Ltd. Rotary powder compression molding apparatus
US5462427A (en) * 1993-05-05 1995-10-31 Kilian & Co. Gmbh Rotary tablet press
US20040067275A1 (en) * 2001-03-16 2004-04-08 Roberto Trebbi Tablet press machine
US6997691B2 (en) * 2001-03-16 2006-02-14 I.M.A. Industria Macchine Automatiche S.P.A. Tablet press machine
US20030031744A1 (en) * 2001-08-09 2003-02-13 Cecil William Alvin Rotary tablet press
US6830442B2 (en) * 2001-08-09 2004-12-14 William Alvin Cecil Rotary tablet press
US6676863B2 (en) 2001-09-05 2004-01-13 Courtoy Nv Rotary tablet press and a method of using and cleaning the press
US20040207107A1 (en) * 2001-09-05 2004-10-21 Courtoy Nv Rotary tablet press and a method of cleaning such a press
RU2266822C2 (ru) * 2001-09-05 2005-12-27 Кауртой Нв Ротационный таблеточный пресс и способ промывки такого пресса
WO2003020499A1 (en) * 2001-09-05 2003-03-13 Courtoy Nv A rotary tablet press and a method of cleaning such a press
USRE45590E1 (en) * 2001-12-01 2015-06-30 Fette Compacting Gmbh Ring segment for a tablet press
US20050095310A1 (en) * 2002-04-09 2005-05-05 Hans Kramer Rotary tablet press comprising a die sealing element and corresponding die sealing element
WO2003084738A1 (de) * 2002-04-09 2003-10-16 Kilian Gmbh & Co. Kg Rundlauf-tablettenpresse mit stempeldichtungselement und stempeldichtungselement
US20060157878A1 (en) * 2003-07-07 2006-07-20 Ethypharm Installation comprising a machine for the production of tablets which are intented, in particular, for therapeutic use
CN101443182B (zh) * 2006-05-11 2012-03-28 Ima基利安有限两合公司 带有清洗装置的旋转式压片机及用于该压片机的转子
US8277707B2 (en) 2006-08-02 2012-10-02 Courtoy Nv Rotary tablet press
US20080029915A1 (en) * 2006-08-02 2008-02-07 Courtoy Nv Rotary tablet press
US20110012283A1 (en) * 2006-08-02 2011-01-20 Waldron Michel Simon Rotary tablet press
US8876521B2 (en) * 2007-02-01 2014-11-04 Nestec S.A. Method and apparatus for making centre-filled shaped food products
US20100136180A1 (en) * 2007-02-01 2010-06-03 Nestec S.A. Method and apparatus for making centre-filled shaped food products
US20110014352A1 (en) * 2007-02-15 2011-01-20 Pascal Grenier Method and apparatus for producing a centred compression coated tablet
US8980363B2 (en) 2007-02-15 2015-03-17 Jagotec Ag Method and apparatus for producing a centred compression coated tablet
US7637728B2 (en) 2007-09-13 2009-12-29 Fette Gmbh Rotary tablet press
DE102007043583B3 (de) * 2007-09-13 2009-04-09 Fette Gmbh Rundlauf-Tablettenpresse
US20090072491A1 (en) * 2007-09-13 2009-03-19 Fette Gmbh Rotary tablet press
EP2036709A2 (de) 2007-09-13 2009-03-18 Fette GmbH Rundlauf-Tablettenpresse
EP2082867A3 (de) * 2008-01-25 2011-04-20 Fette GmbH Tablettenpresse
US8525050B2 (en) * 2008-09-09 2013-09-03 Fette Gmbh Method for testing multilayer tablets in a multiple rotary press, the tested tablets produced under normal operation, with m layers pressed and the m+1 layer suctioned off and the tablet fed to the testing station
US20100059292A1 (en) * 2008-09-09 2010-03-11 Fette Gmbh Method for testing multilayer tablets in a multiple rotary press
US20150216805A1 (en) * 2014-02-04 2015-08-06 Kikusui Seisakusho, Ltd. Single stroke compression molding machine and method of producing compression molded product
US9289393B2 (en) * 2014-02-04 2016-03-22 Kikusui Seisakusho, Ltd. Single stroke compression molding machine and method of producing compression molded product
CN105128388A (zh) * 2015-09-22 2015-12-09 太仓益鑫机床有限公司 旋转式压机
US11472071B2 (en) * 2019-09-13 2022-10-18 Kikusui Seisakusho Ltd. Rotary compression-molding machine
US11577434B2 (en) * 2019-09-13 2023-02-14 Kikusui Seisakusho Ltd. Rotary compression-molding machine

Also Published As

Publication number Publication date
BE882654A (fr) 1980-07-31
ATA170280A (de) 1984-12-15
FR2453016A1 (fr) 1980-10-31
DE2914201A1 (de) 1980-10-16
IT8048247A0 (it) 1980-03-25
CH646097A5 (de) 1984-11-15
JPS5918160B2 (ja) 1984-04-25
GB2046169B (en) 1983-05-11
JPS55141400A (en) 1980-11-05
FR2453016B1 (enrdf_load_stackoverflow) 1983-11-04
DE2914201C2 (de) 1982-12-02
AT378348B (de) 1985-07-25
IT1127002B (it) 1986-05-21
GB2046169A (en) 1980-11-12

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